Litvinchuk Spartak N. RussiaSaint PetersburgInstitute of Cytology, Russian Academy of Sciences , 4 Tikhoretsky Prospekt, St. Petersburg 194064litvinchukspartak@yandex.ru Author's articles In commemoration of Jury M. Rosanov (1938–2021) Hybridization and distribution of cryptic species of green toads (Bufotes) (Bufonidae, Amphibia) in Republic of Dagestan (Russia)